Android Question How to publish apps on Google Play

ThRuST

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Longtime User
Ok so now I have created an app that I want to sell on Google play. As I have never published anything there before it seems to be a good idea to post my question in this forum to help myself and others who follow in the same footsteps. Do I have to use the Google in-app API library to publish my app on Google play or is it just to simplify for users when running the app for example do I need to create two APK files and use the in-app API in the trialversion app with a "upgrade to fullversion" button to allow the user to purchase the full version of the app? Or is it just to upload one version with an inbuildt password that unlocks the app. Then I assume that Google play purchase must provide the password to be able to unlock all features. I have read Googles wiki for their marketplace and I think only one APK is allowed which means passwords must be build in? Thanks for all posts that may be of help. I can perhaps make it simple for myself to upload the version that cost money but it would be more effective to allow users to try a trialversion and decide if they want to unlock features in the app. Thanks
 

Erel

B4X founder
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It is difficult to read your question. You should add some empty lines...

Do I have to use the Google in-app API library to publish my app on Google play
No. Only if you want to access in-app payments.

If you want to have two apps (trial and full version) then you should upload two APKs with different package names.
 
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ThRuST

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Licensed User
Longtime User
Hi Erel. ok so I need to upload two versions , one free and one that cost. What about build in a license password that unlocks functions to use only one version as in many software, can that be an alternative or even possible to check if the user purchased through the in-app library? A complete guide how to implement the library would be useful. what do you suggest.
 
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ThRuST

Well-Known Member
Licensed User
Longtime User
Thanks. About the private sign key.. in B4A IDe under tools/private sign key it says 'first name, last name, organisation, password, browse..' and the option to create a new or load existing key. Will I get a sign key when publishing my app on Google play, should I load that key in B4A? I have never seen anyone ask this question but it seems to be an important step to get the app published.
 
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